منابع مشابه
Progenitors of core-collapse supernovae
Knowledge of the progenitors of core-collapse supernovae is a fundamental component in understanding the explosions. The recent progress in finding such stars is reviewed. The minimum initial mass that can produce a supernova has converged to 8± 1M⊙, from direct detections of red supergiant progenitors of II-P SNe and the most massive white dwarf progenitors, although this value is model depend...
متن کاملYOUNG AND MASSIVE BINARY PROGENITORS OF TYPE Ia SUPERNOVAE AND THEIR CIRCUMSTELLAR MATTER
We present new evolutionary models for Type Ia supernova (SN Ia) progenitors, where we include massstripping effect on a main-sequence (MS) or slightly evolved companion star by winds from a mass-accreting white dwarf (WD). The mass-stripping attenuates the rate of mass transfer from the companion to the WD. As a result, quite a massive MS companion can avoid forming a common envelope to increa...
متن کاملThe Progenitors of Type Ia Supernovae
Type Ia supernovae (SNe Ia) occur in both old, passive galaxies and active, star-forming galaxies. This fact, coupled with the strong dependence of SN Ia rate on star formation rate, suggests that SNe Ia form from stars with a wide range of ages. Here we show that the rate of SN Ia explosions is about 1% of the stellar death rate, independent of star formation history. The dependence of SN Ia r...
متن کاملThe Progenitors of Recent Core-Collapse Supernovae
We present the results of our analysis of Hubble Space Telescope (HST ) and deep ground-based images to isolate the massive progenitor stars of the two recent core-collapse supernovae 2008bk and 2008cn. The identification of the progenitors is facilitated in one of these two cases by high-precision astrometry based on our HST imaging of SNe at late times.
متن کاملDouble degenerates and progenitors of supernovae type
We report on systematic radial velocity surveys for white dwarf – white dwarf binaries (double degenerates – DDs) including SPY (ESO Supernovae Ia progenitor survey) recently carried out at the VLT. A large sample of DD will allow us to put strong constrains on the phases of close binary evolution of the progenitor systems and to perform an observational test of the DD scenario for supernovae o...
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ژورنال
عنوان ژورنال: Journal of Astrophysics and Astronomy
سال: 1984
ISSN: 0250-6335,0973-7758
DOI: 10.1007/bf02714467